Means for converting motion.



C. E.. EDWARDS.

MEANS FOR CONVERTING MOTION.

APPLICATION FILED MAR. 27. 1913.

Patented Apr. 4, 1916.

2 SHEETS-SHEET I.

76 A' Suva/nto@ n I l c'. E. EDWARDS. MEANS FOR CONVERTING MOTION.APPLICATION FILED MAR.27.I913.

Patented Apr. 4, 1916,

2 SHEETS-SHEET 2.

' UNITED sTATEs PATENT oEEIoE.

CHARLES E. EDWARDS, or IIIA-NSITELIL OHIO', AssIGNon or ONE-THIRD ToWILLIAM E.

I s'osa` AND ONE-THIRD To HOWARD s. TWITCHELI., or MANSFIELD, oHIo.

- Specication of Letters Patent.

MEANs For. CONVERTING MOTION.

Patented Apr. 4, 1916.

Application led March 27, 1913. Serial No. 757,232. y

4and useful Improvements in Means for` Converting Motion, of which thefollowing is a specilioation. i

This invention relates to means forconverting reciprocatory motion intorotary motion, and has for itsobject the provisionl of simple and ecientmeans for the stated purpose which will dispense with the use of aconnecting rod and crank shaft and which will be composed of fewpartscompactly arranged and not liable to get out of order.

The invention is illustrated in t-he accom- [panying drawings and willbe hereinafter fully described, the novel features being subsequentlypointed out in the claim following the description.

In the drawings: Figure 1 is a sectional view ofone embodiment of theinvention; Fig. 2 is a similar view showing a different embodiment ofthe invention; Fig. 3 is a transverse section of the arrangement shownin Fig. 1; Fig. 4 shows a further modification, and Figs. 5 and 6 arediagrams of different forms of cams which may be employed. l

Referring more particularly to Fig. 1, 1 designates a cylinder which maybe a part of a gas or steam engine or any other form of prime motoriirwhich a piston 2 is mounted to reciprocate and actuate a piston rod 3extending through the cylinder. In this particular embodiment of myinvention, the piston rod 3 extends through a packing box and vguide 4and is provided at its outer end with a cross head 5 having a pin 6projecting laterally therefrom and playing in a longitudinal slot 7 in astationary guide 8 which is illustrated as a sleeve rigid with theadjacent head of thecyIinder and projecting axially therefrom. The pin 6is preferably equipped with a roller 9 to reduce.

the friction'al wear between the same and the walls of the slot 7 andthe outer extremity of the pin plays in a cam groove 10 formed in asleeve 11 which is rigidly secured within the hub 12 of a iy-wheel orband pulley 13. Bearings 14 may be provided between the fixed sleeve orstationary guide 8 and the ends of the hub 12, and, in the particulararrangement shown, retaining nuts or collars 15 areprovided on the endof the stationary `guide to prevent the rotating parts slippingtherefrom. It. will be'noted that the bearings 14 at each end of theguide member 8 are substantially similar in construction, and 1t is,therefore, deemed necessary todescribe only one of them 'm detail, themember 14, which is positioned at the outer end of the guide, beingchosen in this instance. The bearing 14 includes two ring or collarmembers 28 and 29. The member 28 isbeveled on its outer face, while themember 29 is beveled on its inner face. These beveled faces of themembers 28 and 29 are adapted to mate, when in assembled position,vsothat they may receive between them the roller bearings, indicated at30.. The roller bearf ings 30 are, as .the result ,of the beveling of ithe adjacent faces of the members 28 and 29, so arranged that they willrotate aboutv an axis which is inclined upwardly and outwardly withrespect to the guide member 8. It will be seen that the member 15 is ofsuch size that, when threaded on the ter` minal of the guide 8, it willengage only' against the bearing member 28. As a result of the peculiardisposition of the rollers,

30, it is not necessary to provide any ad ditional means. for holdingthe bearing member 29 against displacement. jacent terminal of themember 12 is, of course, recessed to receive the bearing member 29, sothat the bearings will act to hold the driven member 12 againstdisplacement from its proper position on the member 11. Thus the member15 bears against neither the member 29 or l2, yet at the same time itacts to properly maintain the bearings in the necessary relation to eachother and to the member 12. It will 'be readily seen .that )when thepiston 2 and the rod 3 extending therefrom are reciprocated the crosshead 5 with the lateral pin 6 will necessarily move in the samemanner,as the cross head is rigid with the outer end of the piston rod.Inasmuch as the free end of the pin 6 plays in the cam groove 10 of thesleeve 11 and is held 4against rotation itself by the slot 7-= of Thead-l the stationary' guide 8, the sleeve 11 will be' than one completerotation during the stated 11o travel of the piston. The exact form ofYthe cam will, of course, be -determined by the work to be done' and theconditions under Itwill be understood, of course, that the particulararrangement of the parts is immaterial and that the cross head maybeconpiston, as illustrated, or

nected to a single maybe connected to a and the exact form of is of nomoment so thatit may be disposed immediately adjacent the cylinder ormay be ata point somewhat remote therefrom, as maybe deemed mostdesirable under any particular circumstances.

In Fig.' 1, the cam is illustrated in the form. of asleeve or hollowcylinder, but, in Fig. 2, I have illustrated an arrangement by which asolid cylinder may be utilized. This figure also illustrates one mannerof employing a pluralitylof cylinders t0 drive the cam cylinder orroller. In this illustrative arrangement, the cylinders 16 are pluralityof pistons 4arranged with their axes parallel and stationa'ry guides 17are provided adjacent theends of the cylinders. The cam 18 is in theform of a solid roller or cylinder disposed between thev guides 17 andhaving the con- `centricl shaft 19 rigid therewith, the fly- Wheel'orband pulley 20 being secured upon the end of the shaft, while the groove21 ofthecam is engaged by the pins 22 of the cross heads 23 which areconnected with the pistons 2.4: in the` cylinders 16. y

1n Fig. 4, the cylinder head 25 is free of the stationary guide 26 whichmay be at any distance from the cylinder. The end' the stationary guideof the guide nearer the cylinder is shown provided with an annularflange or collar 27 serving as a stop for the cam cylinder and theily-wheel in assembling theV parts, but the construction and arrangementof the essential parts are the same as in F ig. 1.

The angle of the cam groove may be determined by the work to be done andis not necessarily the same for the out and return strokes of thepiston. In Fig. 5, the groove is shown cut to cause one revolution ofthe cam cylinder 'for each double stroke of the piston, while in Fig. 6the groove is'cut to effect .one-half a revolution of the cam cylinderduring each double stroke of the piston.

In all the illustrated forms of the invention, and various othermodifications of which it is susceptible, the parts maybe arranged in avery compact form and are very few in number so that they are not apt toget out of order and loss of time due to accidents which will cause astoppage of the motor is minimized.

What ii claim is An apparatus of the character described including areciprocating element having a fixed concentrically arranged head at oneterminal, a vcross head carried at the other terminal of the saidelement and arranged- 'eccentrically with respect thereto, a laterallyextending pin carried by the cross head, a stationary cylindrical guidesurrounding the element and having a longitudinally extending slotreceiving the pin, and a driven member mounted for rotation inv theguide, said driven member being provided with a cam groove freelyreceivingthe'pin.

sol

in testimony whereof I aflix my signature .in presence of two witnesses.

CHARLES E.- EDWARDS. [L a]

